(Node.js) Get the Email Received Date/Time

Get's the date/time from the topmost Received header. The date/time of when you received an email may be different than the date/time stored in the Date header field, which if truthful, is the date when the email was sent.

The Received header field will look something like this:

Received: from mail.example.com (mail.example.com [99.255.255.99])
 by inbound-smtp.us-west-2.amazonaws.com with SMTP id 72ma443vs1g0o6vqd8erojkpss35s0dt32h323o1
 for admin@chilkatsoft.com;
 Wed, 25 Jul 2018 08:04:23 +0000 (UTC)

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOS

var os = require('os');
if (os.platform() == 'win32') {  
  var chilkat = require('@chilkat/ck-node23-win64'); 
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node23-linux-arm');
    } else if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node23-linux-arm64');
    } else {
        var chilkat = require('@chilkat/ck-node23-linux-x64');
    }
} else if (os.platform() == 'darwin') {
  var chilkat = require('@chilkat/ck-node23-mac-universal');
}

function chilkatExample() {

    var email = new chilkat.Email();

    var success = email.LoadEml("qa_data/eml/p.eml");
    if (success !== true) {
        console.log(email.LastErrorText);
        return;
    }

    var sb = new chilkat.StringBuilder();
    sb.Append(email.GetHeaderField("Received"));

    // Replace semicolons with CRLF's
    var numReplaced = sb.Replace(";","\r\n");

    var st = new chilkat.StringTable();
    st.AppendFromSb(sb);

    if (st.Count == 0) {
        console.log("Should have at least one line..");
        return;
    }

    // The date/time string is the last line in the string table.
    sb.SetString(st.StringAt(st.Count - 1));
    sb.Trim();

    console.log("Received date/time = " + sb.GetAsString());

}

chilkatExample();